专利类型:  发明专利
申请号:  US201514841358
申请日期:  2015-08-31
公开号:  US9446220B2
公开日期:  2016-09-20
申请人:  ABBOTT LAB
发明人:  SIMPSON JOHN A;BOYLAN JOHN F
地址:  
摘要:  Guide wire devices fabricated from a linear pseudo-elastic Ni—Ti alloy and methods for their manufacture. The Ni—Ti alloy that includes nickel, titanium, and about 3 atomic % (at %) to about 30 at % niobium (Nb). Cold working the Ni—Ti alloy stabilizes the alloy's martensitic phase and yields a linear pseudo-elastic microstructure where reversion to the austenite phase is retarded or altogether blocked. The martensitic phase of cold worked, linear pseudo-elastic Ni—Ti—Nb alloy has an elastic modulus that is considerably higher than the comparable cold worked, linear pseudoelastic binary Ni—Ti alloy. This yields a guide wire device that has better torque response and steerability as compared to cold worked, linear pseudoelastic binary Ni—Ti alloy or superelastic binary Ni—Ti alloy.
主权项:  A guide wire device, comprising: an elongated shaft member having a proximal section and a distal section; at least a portion of the elongated shaft member being fabricated from a cold worked nickel-titanium (Ni—Ti) alloy comprising nickel (Ni), titanium (Ti), and niobium (Nb), wherein Nb is present in the cold worked Ni—Ti alloy in an amount ranging from about 3 at % to about 30 at %, and Ni is present in the cold worked Ni—Ti alloy in an amount about 2 at % to 4 at % higher than an at % of Ti, and wherein the cold worked Ni—Ti alloy exhibits linear pseudoelastic behavior.
专利分类号:  C22C19/03;B21D22/02;A61L31/02;A61M25/09;B24B1/00;A61B5/00;C22F1/10;A61L31/12;A61L29/02;C22C30/00;A61L29/12
专利状态:  有效专利
代理人:  
代理机构:  WORKMAN NYDEGGER;Wok John
国家及地区:  
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